A perforated plate has holes of diameter d_h arranged in a pitch p_h. Each hole has a tube of I.D. d_t passing through it. The ligament efficiency is given by

A) $$\frac{{{{\text{p}}_{\text{h}}} - {{\text{d}}_{\text{h}}}}}{{{{\text{p}}_{\text{h}}}}}$$ B) $$\frac{{{{\text{p}}_{\text{h}}} - \left( {\frac{{{{\text{d}}_{\text{h}}}\,{{\text{d}}_{\text{t}}}}}{2}} \right)}}{{{{\text{p}}_{\text{h}}}}}$$ C) $$\frac{{{{\text{p}}_{\text{h}}} - {{\text{d}}_{\text{t}}}}}{{{{\text{p}}_{\text{h}}}}}$$ D) $$\frac{{{{\text{p}}_{\text{h}}} - {{\text{d}}_{\text{h}}}}}{{{{\text{d}}_{\text{h}}}}}$$

Answer & Solution

Correct Answer: Option C

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A perforated plate has holes of diameter dh arranged in a...

A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

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A perforated plate has holes of diameter d_h arranged in a pitch p_h. Each hole has a tube of I.D. d_t passing through it. The ligament efficiency is given by